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da Silva A.V.C.,Embrapa Coastal Tablelands | Freire K.C.S.,Federal University of Sergipe | Ledo A.S.,Embrapa Coastal Tablelands | Rabbani A.R.C.,Bahia Federal Institute of Education
Scientia Agricola | Year: 2014

Usually known as jenipapo, Genipa americana L. is a Rubiaceae Brazilian native species. It is an important species in the restoration of Brazilian riparian forests and is one of the most promising fruit trees for sustainable harvesting programs. In this study we provide the first data on the genetic diversity and structure of a Jenipapo Germplasm Bank using inter simple sequence repeat (ISSR) markers. We evaluated 160 accessions from wild populations, and the data generated from 12 ISSR primers were used to determine genetic variability via a model-based Bayesian procedure (Structure) and molecular variance analysis. In addition, Shannon index, genetic diversity and Jaccard coefficients were estimated. A total of 12 primers were used, which generated 123 polymorphic fragments. Four groups were formed from the analysis of the fragments, and the CR1-2 genotype was isolated, being more divergent than the other genotypes. © 2014, Scientia Agricola. All rights reserved. Source

de Freitas T.A.,State University of Santa Cruz | Franca M.G.C.,Federal University of Minas Gerais | de Almeida A.-A.F.,State University of Santa Cruz | Souza V.L.,Bahia Federal Institute of Education | And 2 more authors.
Environmental Science and Pollution Research | Year: 2015

Toxic effects of copper (Cu) were analyzed in young plants of Inga subnuda subs. luschnathiana, a species that is highly tolerant to flooding and found in Brazil in wetlands contaminated with Cu. Plants were cultivated in fully nutritive solution, containing different concentrations of Cu (from 0.08 μmol to 0.47 mmol L−1). Symptoms of Cu toxicity were observed in both leaves and roots of plants cultivated from 0.16 mmol Cu L−1. In the leaves, Cu clearly induced alterations in the thickness of the epidermis, mesophyll, palisade parenchyma, and intercellular space of the lacunose parenchyma. Also, this metal induced disorganization in thylakoid membranes, internal and external membrane rupture in chloroplasts, mitochondrial alterations, and electrodense material deposition in vacuoles of the parenchyma and cell walls. The starch grains disappeared; however, an increase of plastoglobule numbers was observed according to Cu toxicity. In the roots, destruction of the epidermis, reduction of the intercellular space, and modifications in the format of initial cells of the external cortex were evident. Cell walls and endoderm had been broken, invaginations of tonoplast and vacuole retractions were found, and, again, electrodense material was observed in these sites. Mineral nutrient analysis revealed higher Cu accumulation in the roots and greater macro- and micronutrients accumulation into shoots. Thus, root morphological and ultrastructural changes induced differential nutrients uptake and their translocations from root toward shoots, and this was related to membrane and endoderm ruptures caused by Cu toxicity. © 2015, Springer-Verlag Berlin Heidelberg. Source

Tizioto P.C.,Federal University of Sao Carlos | Gromboni C.F.,Federal University of Sao Carlos | Gromboni C.F.,Bahia Federal Institute of Education | de Araujo Nogueira A.R.,Embrapa Southeast Livestock | And 8 more authors.
Meat Science | Year: 2014

Calcium (Ca) and potassium (K) are essential nutrients in animal nutrition. Furthermore, the Ca content can influence meat tenderness because it is needed by the proteolytic system of calpains and calpastatins, major factors in postmortem tenderization of skeletal muscles. K content, which is needed for muscle contraction, can also affect meat tenderness. This study showed that K positively affects the Warner-Bratzler shear force (WBSF), measured at 14. days of meat aging, which means that higher levels of K are related to lower meat tenderness. Additionally, a significant effect (P. ≤. 0.015) of a SNP in the calcium-activated neutral protease 1 (CAPN1) gene on Ca content was observed. Metal content in beef can affect not only nutritional values but also meat quality traits. Part of this effect may be related to variation in specific genes. © 2013 Elsevier Ltd. Source

Fontes R.R.,Bahia Federal Institute of Education | Oliveira A.L.C.,Salvador University | Sampaio P.N.M.,Salvador University | Pinheiro T.R.,Salvador University | Figueira R.A.R.B.,Salvador University
Simulation Series | Year: 2014

The OpenFlow protocol is an example of a Software Defined Networking protocol proposed as a software mechanism for controlling the network equipments. Nevertheless, the management of OpenFlow experiments can be a difficult task considering the programming languages and the configuration required for the resources involved. Nevertheless, this task would be straightforward with the use of a graphical tool. This paper presents the utilization of a graphical user interface called Visual Network Description (SDN version) for the authoring of OpenFlow scenarios. In order to demonstrate the potential of this tool a case study is presented illustrating the authoring and execution of an Openflow scenario. Source

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